Got the KG240A too here, other family member bought it

Colour is expected like those budget TN monitors, 144Hz is smooth.

tried to go in service menu, the menu went to top left but there are no information on panel model. My XB271HU shown it.

The stand is also funny, almost the same stand like on budget 60Hz monitors.

But at the end of the day, 144Hz is what matters for gaming.